HC1/HW2

Continuous machining of gray cast iron｜ Alumina ceramic (White ceramics)

First recommendation for finishing gray cast iron

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High-speed performance is achievable with the thermally and chemically stable alumina ceramic blend

Effective machining at speeds up to Vc= ~700m/min 2300 SFM

Gray cast iron
Finish Turning

Cutting conditions

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Grade	Material	Operation type	Machining	Cutting speed (m/min) Cutting speed (SFM)	Feed(mm/rev) Feed(IPR)	DOC(mm) DOC(inch)	Coolant
HC1	Gray cast iron	Turning	Finish turning of Gray cast iron	350 – 700 1200 -2300	0.1 – 0.4 .004 – .016	-2.0 – .080	DRY
HW2	Gray cast iron	Turning	Roughing to semi-interrupted finishing of gray cast Roughing to finishing of cylinder liners	350 – 600 1200 – 2100	0.1 – 0.4 .004 – .016	-2.0 – .080	DRY

Case study

HC1 doubled the tool life of the competitor’s black ceramic.

HW2 doubled the tool life and achieved superior surface finishes on the part compared to the competitor’s insert.

April 23, 2025

As brake disc machining evolves, NTK’s ceramic solutions deliver higher speeds, longer tool life, and ...

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